Paper-bag-manufacturing machine.



P. L. BARTHOLOMEW.

PAPER BAG MANUFACTURING MACHINE. APPLICATION FILED PEB.14, 1907.

929,273 Patented July 27, 1909.

10 SHEETS-SHEET l.

P. L. BARTHOLOMEW. PAPER BAG MANUFACTURING MACHINE.

APPLIGAT' ON FILED FEBJA, 1907. 929,273. Patented July 27, 1909.

10 SHEETS-SHEET 2 P. L. BARTHOLOMEW. PAPER BAG MANUFACTURING MACHINE.

I APPLICATION FILED T12R14, 1907. 929,273. Patented July 27, 1909.

10 SHEETS-SHEET 3 Jim; .7117

P. L. BARTHOLOMEW.

PAPER BAG MANUFACTURING MACHINE.

APPLICATION FILED PEB.14, 1907. 929,273. Patented July 27, 1909.

10 SHEETS-SHEET 4.

P. L. BARTHOLOMEW.

PAPER BAG MANUFACTURING MACHINE.

APPLICATION FILED FEB.14, 1907.

m W W 7 6 WM A m m N\ mm 3 T W J u l9 A p d 0 1 a Y e m k .l

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P. L. BARTHOLOMEW.

PAPER BAG MANUFACTURING MACHINE.

APPLICATION FILED FBB.14, 1907.

929,27 3. Patented July 27, 1909.

1Q SHEETS-SHEET 6.

P. L. BARTHOLOMEW.

PAPER BAG MANUFACTURING MACHINE.

APPLICATION FILED FEBJA, 1907. 929,27 3.

Patented July 27, 1909.

10 SHEETS-SHEET 7.

P. L. BARTHOLOMEW.

PAPER BAG MANUFACTURING MACHINE.

APPLICATION FILED PBB.14, 1907.

929,273. Patented July 27,1909.

10 SHEETS-SHEET 8.

P. L. BARTHOLOMEW.

PAPER BAG MANUFACTURING MACHINE.

Patented July 27, 1909.

10 MEETS-4mm 9 fiezzifip APPLICATION FILED PBB.14, 1907.

P. L. BARTHOLOMEW.

PAPER BAG MANUFACTURING MACHINE.

APPLICATION FILED 1113.14, 1907.

929,273. Patented July 27, 1909.

10 SHEETSSHEET 10.

UNITED STATES PATENT OFFICE.

HINEAS L. BARTHOLOMEW, OF AURORA, ILLINOIS.

imPEa-BAamAiIUFAoTURmG MACHINE.

To all whom it may concern:

Be it known that I, PmNEAs L. BARTHOL- oMEw, a citizen of the United States, residmg in Aurora, county of Kane, and State of Illinois, have invented a new and useful Improvement in Paper-Bag-Manufacturing Machines, of which the following is a specification.

My invention relates to that class of paper bag manufacturing machines which are designed to out, fold and paste the bottom of the bag into the customary diamond shape, and my invention applies more articularly to those particular parts of t e machine which are designed for cutting, gripping and folding the pa er tube.

My principa object is to improve generally the parts of the machine concerned in cutting, folding and gripping the bellows folded. tube from which the individual bags are made, but my particular object is to improve the cutting bar designed to produce the initial cut in the bellows folded paper tube; to imrove .the means of feeding the bellows folded tube into the cutting, folding and gripping parts of the machine; to improve the means of gripping and retaining the projecting severed portions on the upper layer of the bellows folded tube; to improve the means of gripping the side margins of the upper section of the bellows folded tube and to retain a firm grip thereon for the required length of time; to improve especially the means of gripping the side margins of the lower section of the bellows folded tube and to retain a firm grip thereon for the required length of time; to improve the breaking or creasing means heretofore employed, and to improve the means employed for spreading the sides of the paper tube when the diamond fold is being produced.

My invention consists of certain details of construction hereinafter set forth, pointed out in my claims and illustrated in the ac-,

. companying drawings in which,

Figure 1 is a view in side elevation of that portion of my machine which constitutes the cutting, gripping and folding means. Fig. 2 is a side elevation of the reverse side of the same. Fig. 3 is a plan view of the same. Fig. 4 is a plan view with the tongue and that portion of the machine above the tongue removed. Fig. 5 is a longitudinal sectional view of the same taken on the line 5--5 of Fig. 3. Fig. 6 is a cross-section of the machlne taken on line 66 of Fig. 5. Fig. 7 is Specification of Letters Patent.

Application filed February 14, 1907.

Patented July 27, 1909.

Serial No. 857,855.

a cross-section of the machine taken on line 7-'7 of Fig. 5. Fig. 8 is a detail side view of the irons and the shaft on which the same are mounted. .Fig. 9 is a longitudinal section of the same, taken on the line 9-9 of Fig. 8. Fig. 10 is a detail plan view of a portion of the tongue-plate and associated. parts. Fig.- 11 is a bottom view of the same, at art of the central portion thereof being bro en away. Fig. 12 1s a side view of the same with the end portion thereof in longitudinal section, taken on line 12-12 of Fig. 10. Fig. 12 is a transverse section of the parts shown in Fig. 12, taken on line 12*12 of Fig. 12. Fig. 13 is a transverse sectional View, taken on line 1 3-13 of Fig. 10. Fig. 14 is a cross-section taken on line 1414 of Fig. 11. Fig. 15 is a transverse vertical section of the gripping and folding rollers, taken on the line 15-15 of Fig. 16. Fig. 16 is a longitudinal section taken axially throu h both gripping and folding cylinders, wit the parts in the position shown in Fig. 15. Fig. 17 is a longitudinal section taken longitudinally through both of the said cylinders when in changed position. Fig. 18 is a cross-section taken on line 1818 of Fig. 17. Fig. 19 is a detail view of the gripping device shown in Fig. 17. Fig. 20 is a detail view of the gripping devices mounted on the bar 149. Fig. 21 is a detail view of the gripping device mounted on the plate 178 with parts in section taken on line 2121 of Fig. 16. Fig. 22 is a perspective View of the gripping and folding cylinders with a bag being formed therein. Fig. 23 is a cross-section of the machine, taken on line 2323 of Fig. 5. Fig. 24 is a cross-section taken on line 2424 of Fig. 5.

Referring to the accompanying drawings, 10 indicates one of the horizontal rails of the lower part of the frame of the machine, and 11 indicates the companion and arallel rail. On these two rails forming the lbngitudinal sides of the frame are mounted the various parts of the machine which constitute the cutting and folding parts, and it is to these parts alone that my lnvention relates.

When reference is herein made to the forward or rear portion of the machine, the rear portion is intended to mean the receiving end of the machine and the forward portion is intended to mean the delivery end of the machine.

At right angles to the rails 10 and 11, near bar 12. 13 indicates a like cross-bar near the delivery end of the machine. The two rails aforeasidand the said. cross-bars form the frame of the machine.

Arranged longitudinally and in a central position relative to the rails "IO and 11 is located a tongue or feed bar adapted to receive the bellows folded paper tube and to feed same into the machme. The said tongue or feed bar extends forwardly to a point near the forward part of the machine and is horizontal and parallel with and above the level of the rails 10 and 11. The said tongue is composed of an upper plate 15, and a lower plate 16, which are vertically separated a considerable distance at their rear ends, the forward ends thereof being in very close proximity to each other. A longitudinally arranged Wedge shaped bar 17 is interposed between and connects said plates, said bar extending from the rear portion of the tongue to a oint near the forward end of the same and eing centrally located laterally of the lates so as to provide longitudinal grooves between the margins of said plates at the sides of the tongue.

Mounted on the'rail 10 a short distance from the receiving end of the machine, and extending upwardly therefrom, is a standard 1S, and on the rail 11 is a companion standard 19. Said standards 18 and 19 afford supports for journal boxes 20, 20, in which are supported the ends of a transverse, longitudinal shaft 21, located below the plane of the tongue. Said shaft has on its central portion two like disks 22 and 23. Severally attached to said disksare longitudinally arranged cutting knives 24 and 25. Said knives are arranged to enter recesses 26 and 27 in the lower portion of the tongue plate 16 as the shaft 21 revolves. The said disks are adjustable on the said shaft and are so mounted thereon that the knives :24'and 25 operate at the same time. The said knives 24 and 25 are arranged to each make a longitudinal cut in the lower fold of the bellows folded paper tube, the two cuts being parallel with each other and of equal length and laterally o posite each other. Secured to one end of t he shaft 21 is a cam disk 28 rovided with a lug 29 on the periphery of its flange, for purposes hereinafter set forth. Said disk is also adjustable on the shaft 21. Above and in the same vertical plane with the shaft 21 is a transverse horizontal shaft 31 which has bearing at its ends in journal boxes which are mounted in the standards 18v and 19. Said shaft 31 is provided on its central portion with a transverse guide passage 32 through which extends a transversely arranged cylindric knife bar 33 adapted to slide endwise in said guide passage. Said knife bar 33 has secured to one of its ends a knife 34, said knife being arranged transversely with relation to the machine, or in. parallel relation to the shaft 31. The said knife is in width e ual to about one-half of the width of the be lows folded aper tube, and is adapted to make the initia l cut in the said paper tube, which cut extends at right angles to the tube and between the slde margins thereof. The said knife .bar 33 is actuated through the medium of aT-shaped lever 35 mounted within a longitudinal slot 1n the shaft 31, said slot extending from the central portion of the shaft to a point near one end thereof. The body or shank of the T-shaped lever 35 is ara'llel with the shaft and engaged at its en with the knife bar 33, in such manner as to give endwise movement to the same. The said lever 35 is pivotally secured to the said shaft 31 at the'junction of its transverse arms with its body or shank, said arms extending transver ly of the shaft. One arm of said leverhas an antifriction roller 36 mounted at its end. The other arm of said lever is connected with one end of a coiled spring 37, the other end of which is secured to a lug on the shaft 31, located at a point between the end of the shaft and the center thereof. Said spring 37 acts to swing the T-shaped lever 35 m a direction to draw the knife 34 on .the bar 33 inwardly or toward the shaft. 38 indicates a cam supporting collar which surrounds and is-rigidly secured to the journal box 20 located on the side of the machine near the T-shaped lever 35, which 'ournal box has an inwardly extending cylindric part adapted. to receive said collar. Said collar 38 is provided with an upwardly extending arm provided with an inwardly projecting cam lug 39 adapted to act upon the antifriction roller 36 as the shaft 31 revolves so as to move the lever 35 in a direction to shift the'knife bar in a direction to carry the knife outwardly. The cam 38 is so adjusted as to'caiise the'knife bar bearing the knife to be forced outwardly at the time the knife is in a perpendicular osition with relation to and immediately a ove zonta shaft 44 located below the level of the tongue. Said shaft 44 is similar to the shaft 31 with the exception that it is provided with a transversely extending knife 45 which has two separated cutting edges, one at each end thereof instead of having a continuous cutting edge as has the knife 34. The knife 45 is designed to maketwo transtransversely arr'an ed, cylindric knife bar 46 hearing the kni e 45. A T-shapedlever 47 is mounted in a longitudinal groove in the shaft 44 for 0 erating the said lever, these parts being li e those described here'inbeore as being mounted to the shaft 31.

49 indicates a cam su porting collar which surrounds and is rigid y secured to an inwardly projecting extension of the journal box 43. Said collar is provided with a downwardly extending arm having at its outer end an inwardly extending cam 111g 50 designed to operate the T-shaped lever asthe shaft 44 revolves, thus causing the bar bearing the toothed knife to be actuated in the same manner as hereinbefore described in connection with the knife carried by the shaft '31. The lower plate 16 of the tongue terminates at a oint slightly in advance of the place where t e knife 45 acts upon the under portion of the bellows folded paper tube. The forward end of said under plate 16 is provided withtwo notches arranged side by side and forming a central tongue which is of the same width as the central space between the two separated cutting'edges of the knife 45. The notches in the end of said lower plate 16 extend inwardly to the rear of the point where the knife 45 acts on the under portion of the bellows folded paper tube. fwo like plates 51 and 52 are secured to the lower face of the upper tongue plate 15, one on each side of the central bar 17, and of the central tongue on the end of the plate 16. The said plates 51 and 52 are of such thick ness that the lower surfaces thereof are flush with the bottom surface of the said tongue, as clearly seen in Figs. 11, 12 and 13. Said plates 51 and 52 are provided with recesses 53 and 54 located at the points where the cutting edges of the knife 45 acton the bellows folded paper tube as the shaft 44 revolves, said recesses being adapted to receive said cutting edges, the lower surfaces of said plates 51 and 52 serving to support the paper adjacent to the knife in "the cutting operat1on.. The said plates 51 and 52 are beveled or inclined on their under surfaces adjacentto their ends, and the inclined surfaces'at the rear ends thereof form guide surfaces by which the bellows folds of the tube, when they reach said la'tes, are deflected downwardly and pass lieneath said plates. It is obvious that, by'this construction, the under o'rtion of the bellows folded tube and the be lows folds between the upper and lower portions of the tube, are brought together, -'so that the cutting edges of the knife 45'aieada3'pted to out not only -the lower portions of the beilows shaped pa er tube, but also the inner'rnargins of said ellows folds. Mounted above and in the same vertical plane with the shaft 44, in the standards 41 and 42, are journal boxes 55, 55 havin mounted therein a transverse, horizonta' shaft 56 rovided at its central portion with two rigi y attached collars 57 and 58, each having a radial, knife carrying arm, and to said arms are'attached knives 59 and 60, said knives being arranged longitudinally and adapted to make two longitudinal, parallel cuts in the paper tube. Longitudlnal reeesses 61 and62, respectively, are formed in the 11 per plate 15 of the tongue to receive said linives 'when the shaft 56 revolves. The two collars 57 and 58 are adjustable on the shaft and are so adjusted that their res ective knives act on the upper portion of the bellows folded tube at thesame time, and to produce therein two cuts side by side and one on each side of the longitudinal center line of the tube and at an equal distance therefrom, for pur oses herein after set forth.

63 and 64 in icate two like standards, mountedon the rails 10 and 11, respectively, ashor't distance in advance of the standards 41 and 42. Said standards 63 and 64 support journal boxes 65, 65 having mounted therein a transverse, horizontal shaft 66 located below the level of the tongue and to which is secured a cI'ylinder "67. Said cylinder has its periphera surface at the top thereof in a orizontal plane passing between the top and bottom surfaces of the upper tongue plate i5. Said tongue plate 15 1s provided with opposite notches in its side edges (Figs. 10 and 11) forming a narrower central portion adjacent to the cylinder 67. The central annular portion of said cylinder 67 is reduced in diameter to form a shallow groove 63, through which the longitudinally extending, narrower, central portion 70 of the tongue passes without coming in contact with, or

'earing upon, the said 0 linder. The cylinder 67 is also rovide with two annular grooves69, 69 ocatedat either side of the central groove 68 in line with the longitudinal side margins of the upper tongue plate 15.

Mounted in the standards 63 and 64 above, and in the same vertical plane with, the shaft 66 are journal boxes 72, 72 having mounted therein a transverse, horizontal shaft 7 3locatedabove the level of the tongue plate 15. On said shaft 73 is mounted a cylinder 74 similar in size and conformation to cylinder 67, the said cylinder 74 being provided in its central portion with a shalow, circumferential groove 75 corresponding in width with the groove 68 in the cylinder 67. The two cylinders 67 and 74 are com a'nion cylinders and'are adapted to grip the ellows folded tube between them and to thereby assist the feed of the said tube through the machine. The annular grooves 75 and 68 form a space between the two cylinders to permit the passage of the narrower part 70 of the upper plate of the tongue, and the larger annular parts of the" cylinders at the sides of said central grooves hear u )on the tube inside of its side margins. The ateral rooves 69, 69 in the c hnder 67 are in line longitudinally with t 1e sides of the ton ue and also in line with the side margins nally face of the tongue plate 15.

of t e tube, the said grooves serving to kee the folded outer edges of the bellows fold s from becoming crushed and broken as they pass between the said cylinders. Located within the central groove 75 of said cylinder 74. are two parallel, narrow, circumferential grooves 76, 76 adapted to receive longitudiarranged, parallel guide wires 78, 78, located above the top plate 15 of the tongue and extending beneath said cylinder 74. The guide wires 78, 78 are secured at their rear ends to a cross-bar 80 mounted on the top of the standards 41 and 52, and in a position at the rear of the shaft 56. The said guide wires extend downwardl from said cross bar to the rear of the s aft 56 and curve forwardly beneath said shaft, said wires extending beneath and forwardly of the cylinder 74' to points in advance of said cylinder. The object of said guide wires is to guide \the up er fold of the bellows folded tube between the feed cylinders 67 and 74. The forward end portion of the upper tongue plate 15 is located forward of the cylinders 67 and 74 and, as more fully illustrated in Fig. 5, its rear mar ins or shoulders are oblique or inclined, w ile its forward edge is adjacent to the gripping and folding. cylinders. Afiixed to the wider forward end of the tongue plate 15 is a leaf sprin 81 having two forwardly projecting, paral el, laterally separated prongs 82 and 83 which extend to a point beyond the forward extremity of the said tongue plate. Between their ends said prongs are curved downwardly, as shown in Fig. 10, and their curved parts, when the prongs are depressed, are ada ted to extend into longitudinally arrange recesses provided for them in the upper sur- Between the said prongs 82 and 83 1s a,forwardly and downwardly projecting central prong 84 which is deflected downwardly into an opening 85 in said tongue plate and terminates below the lower sur ace of 'the said tongue plate 86 indicates a supplemental, horizontal plate located below and parallel with the wider forward end portion of the tongue plate 15, and conforming to the side and rear margins of the same. Said plate 86 extends beyond the forward extremity of the said plate 15 and beveled or inclined forwardly and upwardly on the lower surface of its art which extends beyond said tongue p ate (Fig. 12). The beveled extremity of saidplate 86 is adapted to feed the tube into and etween the gripping and feeding cylinders, as hereinafter set forth. Said supplemental plate 86 is connected with the tongue plate 15 by means of a longitudinal, central plate or connecting member 104 (Fig. 12 beyond which the side margins of the tongue plate.

and the lower plate 86 extend laterally so that longitudinal grooves are formed between the side mar ins of the wider forward end of the tongue late 15 and the supplemental plate 86, sai grooves being deslgned to receive the inwardly projecting folds of the bellows folded paper tube, as the same is being fed to the gripplng and folding cylinders.

Extending longitudinally between the upper plate 15 and the lower plate 16 of the tongue, from the orifice 85 to a point near the rear of the tongue, is a rod 87, said rod lying within the space formed between the said u per and lower plates, as hereinbefore descri ed. The forward end of said rod is bent upwardly within the orifice 85 so as to engage the under surface of the central tongue 84. The said rod is mounted loosely so as to be adapted for forward and back ward endwise movement, and the rear end of said rod is bent downwardly to provide an arm 88 which extends downwardly throu h a longitudinal slot 89 (Figs. 11 and 12) in the lower tongue plate 16, said slot being adapted to permit a limited forward and backward movement of the rod. Said arm 88 engages one end of a horizontally swinging lever 90 which extends transversely of the ,machine frame and is mounted on an upright pivot stud 91, secured to the rail 11 so as to swing in a horizontal plane. Devices are rovided for actuating said lever 90, as willbe hereinafter described.

92 indicates a cross bar extending between and attached at its ends to, the rails 10 and 11, at right angles to the latter, said cross bar affording support for two pressing wheels 93, 93 which are held by spring pressure in upwardly pressing contact with the bottom sur face of the lower tongue plate 16. Said wheels 93, 93 are arranged obliquely to the longitudinal center line of the machine and operate to cause the freshly pasted overlapping longitudinal edges of the tube to be he (1 from spreading apart.

94, 94 indicate longitudinally arranged, horizontal guide plates which extend into the grooves between the side margins of the uper and lower tongue plates 15 and 16, as seen in Fig. 14.- Said guide latesextend from the rear of the tongue p ates to points near the cylinders 67 and 74 and are adapted to enter the bellows folds of the paper tube, as the same is fed into the machine, and to draw the said bellows folds closely into said groove between the rails and 11 and secured at its ends thereto, and at its rear end is secured in a like mannerto another bar similarly attached tothe machine frame, but which is not shown.

96 indicates a horizontal guide plate extending transversely of .the machine frame and attached to the top of a fixed standard 98 on therail 11. The inner end of said guide plate 96 extends to a point beyond the middle of the lower plate 16 of the tongue, the upper surface of said uide plate bearing against the said Lower p ate 16 at the rear of the longitudinal slot 89, and the said slot 89 is located in the lower plate 16 at a point at one side of the longitudinal 'center of said plate.

99 indicates a guide-plate similar to the guide-plate 96 which is secured at its outer end to a standard 100 secured to the rail 10.

The inner end of said guide-plate extends to a point beyond the middle of the lower plate 16 of the tongue, said guide bearingupwardly against the lower surface of said plate 16 at a point forward of the slot 89 in the said lower plate 16.

101 indicates a cross bar extending between and attached to the rails 10 and 11, said cross bar being located just above the level of said rails and forward of the cylinder 67 Attached to said cross bar and rising therefrom are two standards 103, 103, located near the ends of said cylinder 67. Mounted on the upper ends of said standards are two guide arms 102, 102 located and adapted to swing in a horizontal plane and at the level of the top of said cylinder 67.- The said guide arms 102, 102 extend fromthe standards 103, 103 transversely of the machine toward the center longitudinal line thereof. Said guide arms are provided at their outer or pivoted ends with operating levers or handles which extend forwardly therefrom, giving the arms, as a whole, the shape of bell-crank levers, and are adapted to be grasped by thehand in swinging or moving the guide arms for the purpose of laterally adjusting their inner or free ends. Said guide arms are, moreover, so pivoted to the standards 102 and 103 as to be held from movement by friction, while being capable of being swun or moved by the application of considerab e force or pressure thereto. Coiled friction springs 71, 71 (Fig. 1) are shown as applied between saidguide arms and the heads of the screws by which they are pivotally connected with the standards 102, 102, said springs holding the arms in frictional en gs gement with the upper ends of the standards for the purpose stated. The free ends of the said guide arms are located in the lateral grooves between the side edges of the wider forward end of the tongue plate 15 (Fig. 3) and the side margins of the plate 86, which is secured to the lower surface of of said arms are inclined or beveled on inwardly and forwardly converging lines, as clearly seen in Fig. 3.

. As the paper designed to form the bags enters the cutting, gripping and foldin devices of the machine, it has already een folded to form a bellows shaped tube as hereinbefore stated. The said bellows folded tube is threaded u on the tongue plate as hereinbefore descri ed, and one of the side edges of the said tube is provided with paste and is adapted to overlap and to be secured to the other side edge thereof. In threading the paper tube upon the tongue plate, the longitudinal folding plates 94, 94 enter the bellows folds of the tube and retain the same inthe grooves formed between the side edges of the tongue plates 15 and 16./ The side margin of the tube at the side of the machine at which the guide plate 96 is located is threaded between the said guide plate 96 and the lower tongueplate 16 and extends between the lever 90 and the said lower tongue plate. The opposite side margin of the aper tube passes beneath the end of the lisver 90 which engages the arm 88 of the rod 87 and between the guide plate 99' and the lower tongue plate 16. The two side margins of the tube are held in overlapping relation beneath the tongue plate 16 and will be pressed together as they pass between the guide 99 and the lower tongue plate so as to complete the joining ofthe two side margins by means of the adhesive substance applied thereto. The lower portion of the said tube next passes between the pressing wheels 93, 93and the lower tongue plate and as these wheels are mounted in the ordinary manner,v

extending nearly across the upper part orlayer of the tube or nearly to each side edge thereof. Said knife does not penetrate below the lower surface of the upper tongue plate 15 so that only the u per layer of the tube will be cut by the stroke of the knife. The bellows folds of the tube, which travel in the lateral grooves of the tongue, will not be cut. The downward stroke of the knife 34 is produced by the roller 36 coming in contact with, and being forced inwardly ro'ection 39 on the collar 38. in t e p31 er tube are produced by the act1on of the 1ves 24 and 25, carried by the disks 22 and 23 on the shaft 21, said knives being arranged transversel of the said shaft and roducing two aral e1 longitudinal cuts in the tube. tongue, it is obvious that the cuts produced will be in the lower fold or portion of the tube, and the parts are so adjusted and timed that the two longitudinal cuts will be in line longitudinally, one with each end of the transverse cut roduced by the knife 34 in the upper fold o the tube.

The two knives 24 and 25 are so mounted and adjusted on the disks 22 and 23 that they will not penetrate the lower tongue plate 16 beyond the upper surface thereof, thus restricting the longitudinal cuts produced by the said knives to the lower section or portion of the tube. Other cuts are produced in the upper layer or partof the tube by the longitudinal knives 59 and '60 secured to the disks 57 and 58, respectively, on the shaft 56, which disks are so located on the said shaft that each of said knives will produce a longitudinal cut in line with one end of the transverse cut produced by the knife 34. The shaft 56 is so located and the disks 57 and 58 are so adjusted, and the gearing which drives the several shafts is so timed, as to cause the said knives 59 and 60 to make two longitudinal cuts extending rearwardly by, the cam ther cuts from the ends of the transverse cut made by the knife 34, thus producing a U-shaped out having two right angles and forming a forwardly extending tongue in the upper part of the said tube. The transverse knife 45,11aving two separated cutting edges and mounted on the shaft 44, is so located thereon, and the gearing driving said shaft is so timed that said knife will make two transverse cuts in the lower layer of the tube, in position to meet at their outer ends the forward ends of the two longitudinal cuts made by the knives 24 and 25 mounted on the shaft 21. The longitudinal knives 24 and 25, together with the separated cutting edges of the knife 45, are therefore adapted to make in the lower layer of the paper tube two angular cuts which define the two corners of a forwardly extending tongue to be formed on said lower layer. The said transverse knife 45 is, moreover, so located on its shaft and so timed with respect to the movement of the knives 59 and 60, that the two transverse cuts made by said knife 45 will be in line transversely with the centers of the two longitudinal cuts made by said knives 59 and 60. The knife 45 is so adjusted that in its upward stroke it extends into the openings 53 and 54 formed in the plates 51 and 52 which are attached to the lower surface of the upper tongue plate 15, as hereinbefore As t 's shaft is located below the described Figs. 11', 12 and 13 The bellows folds of the paper tube pass beneath said plates 51 and 52 and, by reason of the notches in the end of-the lon 'tudinal plate 16, the lower layer of the tu e is no longer separated from the said bellows folds by the lower tongue plate, but the inner margins of the bellows folds and said lower layer are brought-together as they pass beneath said plates 51 and 52. By the action of the knife 45, therefore,- two transverse cuts will be roduced not only in the lower section or old ofthe paper tube, but also through the nner margin of each bellows fold. As the inner folded margins of the bellows folds extend inwardly into the paths of the cutting edges of the knife '45, they are cut transversely by said knife in a manner to form one long cut in each of the bellows folds when the same are opened or stretched apart. U on the completion of the cuts described, a ag section will have been partially severed from the paper tube, and will be connected with the'same only at the center of the lower layer of the tube, between the transverse cuts made by the knife 45 and at the side edges of the tube. With the cuts produced in the manner described, the paper tube is fed to the gripping and folding cylinder of the Inachine, as will be" hereinafter explained.

The purpose ofthe lateral notches in the side edges of the u per tongue plate 15 adjacent to the cylinders 67 and 74 is to pro vide for the gripping of the side portions of the tube between the larger parts of said cylinders .at the sides of the central grooves therein so that said cylinders will act to assist in the feeding or advance movement of the tube. The guide arms 102, 102. are so adjusted as to bring their free ends within the bellows folds of the tube; the guiding edge of each of said arms being inclined forwardly and inwardly. Said guide arms 102, 102, as stated, are located immediately at the rear of the lower supplemental plate 86' on the tongue plate 15, and the free ends of said guide arms project into the lateral grooves between the side margins of said plate 86 and of the tongue plate 15, and act to retain the bellows folds of the paper tube in said grooves as the tube is advanced or fed forward. It Will be remembered that the knife 46 operates to sever the inner folded edges of each of the bellows folds and it is obvious that without said guide arms the severed folds might drop downwardly and come in contact with the rear edges of the laterally projecting parts of'the plate 86' with the effect of retarding or tearing the tube. The purpose of the guide wires 78 and 7 8 is, as stated hereinbefore, to keep the paper tube straight and smooth as it moves toward and leaves the cylinders 67 and 74.

105 and 106 indicate standards extending upwardly from the rails 10 and 11 and armeme ranged in line with each other transversely of t e machine frame.

107, 107 indicate journal boxes supported in, and located nearthe base of, the standards 105 and 106. Said journal boxes afford bearings for a transverse, horizontal shaft 108 on which is secured a cylinder 109, said cylinder being located midway between the rails 10 and 11. The top of said cvlinder extends to a point above the level of the upper surface of the upper tongue plate 15. The forward end of the plate 86, which is attached to the under surface of the tongue plate 15, as described, terminates near the upper surface of the said cylinder 109 and extends partially over the said cylinder. The said .c ylinder 109 is provided with a wide and s rallow, central, annular groove 110 and in said groove with two narrow grooves 79, 79 adapted to receive guide wires 208, 208, used for a purpose hereinafter set forth. The groove 110 is made of the same width as the central grooves 68 and 75 in the cylinders 67 and 74. Said cylinder 109 is also provided, outside of the central groove 110, with two narrower, shallow, annular grooves 111, 111 made of the same width as, and in longitudinal alinement with, the grooves 69, 69 in the cylinder 67. Said grooves 111, 111 are in line with the side margins of the paper tube and are for the purposeof permitting of the passage of the paper tube between the cylinders without crushing and breaking the folded edges of the tube formed by the inturned bellows folds thereof.

112, 112 indicate two longitudinal grooves formed in the-cylindric surface of the cylinder 109, said grooves being adapted to co-act with creasers on another cylinder, as will be hereinafter explained. 113, 113 indicate shallow recesses formed in the surface of said 0 linder 109 for a purpose hereinafter exp ained.

115, 115 indicate journal boxes mounted in the standards 105, and 106, said journal boxes for short shafts or trunnions 116, 116 on the ends of a hollow cylinder 118, said cylinder being of the same size as the cylinder 109 and located above the same, with its central axis slightly to the rear of the central axis of said cylinder 109. Secured rigidly on the journal boxes 115, 115 which are extended inwardly to receive them are cam sleeves 117 and 119 said cam sleeves being adjacent to the ends of the cylinder 118. Sa1d cylinder 118 is provided with grip ing means constructed as follows: In one side of said cylinder is formed a longitudinal slot, which extends through the ends of the cylinder. In said slot is secured a longitudinal supporting bar 120 which extends the entire length of the cylinder and completely fills said slot, the outer surface of said bar being .flush with the outer surface of the cylinder. The said supporting bar is provided at its central ortion with a bracket 121 which is attached to the inner face of said bar ad acent to one side of the same and extends at right angle therefrom, said bracket being designed to dprovide bearings for parts of a supporting evice as will be hereinafter explained. In the inner surface of the bar 120 (Fig. 17) a longitudinal groove is rovided, within which is located a longitudinally arranged operating lever 122 fulcrumed by a pivot pin 123 to the bar, and adapted to swing in a lane radial to the center of the cylinder. She end of said operating lever extends beyond one end of the bar 120 and projects outside of the adjacent end of the cylinder. Mounted on the outer end of said operating lever, is an anti-friction roller 124 adapted to engage a cam projection on the cam sleeve 117. 125 (Fig. 18) indicates a second bracket mounted at the center of the bar 120, at the side edge thereof opposite the bracket-121. The bracket 121 extends diametrically across the interior of the cylinder 118, and its outer end is offset to bring it diametrically in line with the center of the bar 120, and is centrally notched to form two parts which are seated in longitudinal slots 126', 126, formed in and extending longitudinally of the wall of the cylinder, opposite the said bar 120, as seen in Figs. 17 and 18. The inner end of the lever 122 extends to the central portion of the plate 120, and has mounted on its inner end a lug 127 extending therefrom toward the center of the cylinder.

Mounted between the brackets 125 and 121, and adjacent to the bar 120 are two oscillating'blocks 128, 128, said blocks being pivoted to the brackets 125 and 121 by pivots 129, 129, located at points equi-distant from the center of the said bar 120. The said blocks 128, 128, are provided adjacent to the bar 120, with arms 130, 130 which extend from the blocks inwardly or toward each other,-parallel with the bar 120. The ends of said arms are both engaged by the lug 127, which rests against the same when the lever 122 is in its normal position. The said blocks 128, 128 are rovided with inwardly extending, slotted ugs, in which are pivoted, by means of pivots 131, 131 two ell-crank levers 132, 132 each having a longitudinally and a transversely extending arm.

133, 133 indicate gripper arms, which extend transversely of the cylinder, and have their inner ends inserted and adapted to slide endwise in guide-passages 134, 134 formed in the blocks 128, 128, and extending transversely of the cylinder outside of the pivots 129, 129 as clearly seen at the right hand side of Fig. 17. In the inner or adjacent edges of the said gripper arms, are formed transverse notches, which are engaged by the outer ends of the longitudinally extending arms of the bell-crank levers 132, 132. The outer ends bracket 121, the outer ends of said arms being located at the ends of and in the same lane with the offset end portion of saidracket. The end of said bracket 121 constitutes the fixed jaws of the grip ers, the movable jaws of which are forme by the gri per fingers 135, 135. The finger-bearing on s of said gripper arms are located in the outer ends of the slots 126, 126 in which the end portions of the bracket 121 are seated, said slots being long enough to permit oscillatory or swinging movement 0 the gri per arms toward and from the side edges 0 the bracket.

136, 136 are two blocks which are secured by bolts 137, 137 to the face of the bracket 121, in the same plane withthe bell-crank levers 132, 132. (Figs. 17 and 18). Said blocks 136, 136 are provided in their margins nearest the bar120 withnotches in which are inserted the ends of the laterally extending arms of the bell-crank levers 132, 132. C6D,- trally secured to the side of the bracket 121 at a point transversely in line with the lu 127 is a stud 138 which is parallel with said bracket and extends toward said lug. Mounted on said stud 138 and bearing against a shoulder thereon, is a coiled spring 139 which acts on 130, 130 of the blocks 128, in a direction to 1press the sameoutwardly, thereby normally olding the inner end of the operating lever 122 outwardly and holding the outer end of said lever 122 at the inward limit of its radial swing or movement. Outward pressure'on the antifriction roller 124 swings the inner end of the operating lever 122 inwardly or toward the center of the cylinder, and the lug 127 acting on the arms 130, 130 of the 1 blocks 128, 128, operates to swing said arms inwardly and give oscillatory movement to the said blocks in a direction to swing or carry the gripper arms outwardly or away from the outer end of the bracket 121 As the blocks are thus swung or-moved, the pivots 131, 131 will be swung away from each other, but as the outer ends of the transverse arms of the bell-crank levers 132, 132 are engaged with the blocks 136, 136 the effect of this movement of the said pivots will be to swing or turn said bell-crank levers on said pivots in a direction to carry the outer ends of the longitudinally as said arms are engaged with the gripper arms, the latter will be moved. endwisein a direction to carry from the outer end of the bracket 121; the

said gripper arms sliding in their guide aperthe inner ends of the arms said cylinder 118.

extending arms of said bell crank levers away from the bar 120, and

their gripping fingers away tures in the blocks 128, 128. Outward pressure on the roller 124, therefore, has the effect of opening the gripper jaws against the action of the spring 139, which tends to keep them closed. Release of the outward pres. sure on said roller 124 will permit the spring 139 to throw the arms 130, 130 laterally away from the central axis of the cylinder, with the result of swinging the grip erfingers toward and over the outer end of the bracket 121, and, through the action of the bell-crank levers 132, 132, for drawing said fingers inwardly into their gripping position. The end margin of the said bracket 1.21 is in length equal to the width of the knife 34, thereby making it equal to the width of the severed tongue on the paper tube, so that as said tongue a proaches the gri ping cylinder the grip ing ngers 135, 135 wi l grip the side edges 0 said tongue.

146, 146 (Figs. 5, 17 and 22)indicate depressions in the periphery of cylinder 118 located at the portion of the circumference thereof at which the two separated end portions of the bracket 121 extend through the slot 126 of the said cylinder; said end portions of the bracket being substantially flush with the bottom or the depressions. The width of each depression 146 longitudinally of the cylinder is equal to the length of the slot 126 associated therewith.

114, 114 indicate longitudinal grooves in the cylindric surface of the cylinder 118, whichgrooves extend outward from the depressions 146, 146 and are designed to receive knives, as will be hereinafter explained.

148, 148 indicatecreasing knives mounted in the cylindric surface of the cylinder 118 and extending longitudinally thereof, said knives bein located at opposite sides of the longitudina center of the machine and 'oper atin' in connection with the grooves 112, 112 in the cylinder 109 to crease the paper tube, as will be hereinafter explains 149 indicates a supporting bar similar to the bar 120, saidhar being seated in a longitudinal slot provided in the cylindric wall of Extending longitudinally of said bar 149, in the inner surface thereof, is a groove in which is located endwise mov able gripper bars 150, 151 (Figs. 15 and 16), said bars being adaptable for backward and forward movement in said groove longitudinally of the bar 149 and the outer end of said shorter arm is an antialso for movement in a directiontoward and from the center of the inner face of the bar 149 at a friction roller 154 designed to be engaged by the said cam. The longer arm of the said lever extends transversely of the interior of the cylinder 1'18, adj'acentnto the end wall thereof.

156 indicates a bracket attached to and extending inwardly from the inner surface of the bar 149.

157 indicates a lever which extends transversely of the cylinder and is pivoted between its ends to the bracket 156 by means of a pivot pin 158.

159 indicates a link which is pivotally connected at its ends to the end of the transverse arm of the bell crank lever 153 and t0 the outer end of the lever 157. The gripper bar 151 is connected with the standard 156 by means of connecting arms 160 and 161, said arms being pivoted to the said standard and to the gripper bar in a manner to provide the aforesaid forward and backward endwise movement, and also a slight inward and outward movement, of the said gripper bar, while maintaining its parallel relation with the supporting bar 149.

162 indicates "a bracket secured to the point immediately inside the gripper bar 15 163 and 164 indicate connecting arms pivoted to the gripper bar 150 and to the racket 162, said evers being designed to afford a forward and backward endwise movement in the bar 150 as well as a slight inward and outward movement thereof, while holding it in position parallel with the bar 149. Pivoted to the said gripper bar 150, at a point between the arms 163 and 164 is a connecting rod 165 which extends longitudinally of the cylinder to a point beyond the lever 157. Said rod 165 is connected with the end of the said lever 157 nearest the bar 149 by means of a longitudinally extending link 166. The connecting arm 161 is extended inwardly or toward the center of the cylinder, past the pivot by which it is connected with the bracket 156, and the extended end of said arm 161 is pivotally connected with both the arm 161 and the link 166, preferably by means of a 'single pivot pin. The gripper bars 150 and 151 are shown as grooved in their inner faces,

and the arms 160, 161, 162 and 163 are the cylinder, it will move outward or away from the axis of the cylinder, and the connecting arms 163, 164 of the ripper bar 150 tending outwardly throug the slots 167 and i 168, and having end portions which are parallel with the outer surface of the bar 149 and are directed toward the longitudinal center of the cylinder. Said'gripper fingers or grippers are so arranged that their end ortions extend over the outer face of the Ear 149, inside of the inner ends of the slots 167 and 168, and are adapted for gripping engagement therewith. hen the gripper bars 150 and 151 are operated by outward pressure in the roller 154 the said gripper fingers will move away from each other, and will also move radially outward, or away from the bar 149, but when the gripper bars again return to their normal positions, the fingers will be moved into gri ping engagement with the outer surface of t e bar 149. The outer surface of the said bar 149 is provided with two wide notches or depressions, 171 and 172, said de ressions being located at the points at whic the gripper fingers 169 and-170 enage the outer surface of thesaid bar. The inner ends of the slots 167 and 168 are in line with the side margins of the paper tube for purposes hereinafter set forth.

173 indicate journal boxes in which are mounted transverse, horizontal trunnions 174 and 175 which are rigidly attached to the ends of a hollow cylinder 176; said cylinder being of the same diameter and length as the cylinder 118. The three cylinders, 109, 118 and 176 act conjoin'tly to perform certain functions, as will hereinafter appear. The said cylinder 17 6 has its longitudinal axis in the same horizontal plane with that of the cylinder 118, and is located forward of, and above the cylinder 109. The cylinders 118 and 109 have their cylindric surfaces in contact, as do-also the cylinders 118 and 17 6 but said bar being flush with the outer surface of the said cylinder. In the inner face of said bar 178 is a longitudinal groove, as seen in Figs. 15 and 16. 17 9 indicates a bracket secured to the inner face of said bar, adjacent to one of its side edges and centrally between its ends. Said bracket has the form of an elongated fiat plate which extends lengthwise of the bar 178, and laterally therefrom to the opposite side wall of the cylinder. On its longitudinal edge remote from the bar 178, the bracket 179 fits against the inner surface of the cylinder and is provided with a laterally extending flange 180 (Fig. 15) on the ends of which are formed two outwardly extending lugs 181, 181, w 'ch lugs extend through slots 182, 182 formed in the wall of the cylinder 176, with their outer ends flush with the cylindric outer surface of said cylinder; The outer end faces of the said lugs are located at such distances from the ends of the cylinders as to be in line with the side edges of the aper tube, as the same passes through the re lers and constitute stationary members of gripping devices adapted to engage said edges.

184 indicates a bell-crank lever fulcrumed by a pivot 185 to the bar 178 near the end of the same and in the longitudinal groove thereof. One arm of said lever 184 extends longitudinally of the bar toward the end of the cylinder adjacent to the rail 11 and projects outside of the end face of the said cylinder 176 at its end nearest the rail 11. Said bell crank lever 184.- has a second arm which extends from the pivot 185 transversely of the cylinders toward the central'axis thereof. 186 indicates an anti-friction roller mounted on the projecting end of said longitudinal arm of the .ever, said roller being adapted for englagement with the cam sleeve 177, as will be ereinafter explained.

187 and 188 indicate rocking bearingbloeks which are connected by transverse pivots 189 and 190 respectively, with the bracket 179 at one side of the latter. The said bearing blocks 187 and 188 are rovided with arms which extend transverse y of the cylinder and to the ends of said arms are connected by pivots 191 and 192, two bell crank levers 193 and 194, the pivots 191 and 192 being parallel with the pivots 189 and 190 of said bearing blocks- 195 and 196 indicate gripper arms which extend transversely of the cylinder and are mounted in and supported by the bearing blocks 187 and 188, the inner ends of said gripper arms being provided with cylindric parts which fit and slide in guide apertures formed in the said bearing blocks exterior to the pivots 189 and 190 thereof. The said gripper arms are thus adapted to partake of the oscillatory movement of said bearing blocks, while being capable of endwise movement ina direction transverse of the cylinder.

197 indicates a longitudinally arranged link which is pivoted at one end to the transverse arm of the bell-crank lever 18 1 and at its opposite end to the bearing block 188, inside of the pivot 190 of the latter.

198 indicates an'obliquely disposed connecting rod, pivoted at one end to the bearing-block 188, outside of its pivot 190,:and at its opposite end to the bearing block 187, inside of the pivot 189 of the latter.

199 indicates a longitudinally extending, contractile, coiled spring, which is connected at its ends with the gripper "arms 195 and 196, and which tends to draw the swinging ends of said gripper arms toward each other. The outer ends of said gripper arms 195 and 196 extend through the slots 18 2, 182, lon itudinally exterior to the lugs 181 181, on the bracket 179. The said outer ends of the gripper arms are provided with gripper fingers 200, 200, extending from said arms inwardly or toward each other, at right angles to'the arms and overhanging the outer surfaces of said lugs 181, 181. Said gripper fingers constitute the movable members .of gripping devices, which act with the lugs the paper tube.

Attached to the side faces of the bracket 179 by means of bolts 201, 201 are stopbloeks 183, 183, which are shown as provided with slots through which pass the bolts 201, in order to provide for adjustment of said blocks in a direction longitudinally of the cylinder. The bell-crank levers 193 and 194 are provided with arms which extend from the pivots 191 and 192 thereof, transversely of the cylinder, and which rest or bear laterally against the outer ends of said stop-blocks. The said bell-crank levers 193 the pivots 191 and 192, in a direction endwise of the cylinder, toward the ends of the cylinder, and are engaged at their extremities with notches formed in the inner edges of the gripper arms 195, 196.

250, 251 indicate leaf springs which are attached to the bearing blocks 187 and 188, in such manner as to bear on the ends of the gripper arms 195, 196; which latter slide in said bearing blocks as hereinbefore described, and extend through the edges of said blocks nearest the supporting bar 178. Said leaf-springs tend to hold the gripper arms in position with their gripper fingers away from the lugs 181, 181, and thereby maintain the grippers in the open position thereof. The endwise movement of said gripper arms, under the action of said springs 250 and 251, is limitedby means of stopplates 252, 253, which are attached to the outer edges of said gripper arms and have inwardly bent ends ada )ted to engage shoulders on the bearing bfocks; said stop-plates and shoulders being so located as to limit and 194 also have arms which extend from .181, 181, to grip and hold the side edges of 

